It is very much hard to answer.
It was mainly because of how the North and the South of America had different lifestyles and economy's. You would be surprised to know that the Democratic party back then supported Slavery and the republicans dint support Slavery.
Plain Answer: Because of Slavery, Way of Life and Different Economy. The Democratic Party would do anything to keep themselves supported.
Workers mostly sell their labor in order to "<span>a. earn income" since those who employ them must pay them a wage, which they can use to buy food, recourses, etc. for themselves and their families. </span>
It is B. The battle of Coral Sea
The National Currency Act´s main goal was to create a unified national currency, finishing with the problem of many banks issuing different notes. State banks were no longer able to issue money; however, local bankers seized the opportunity of being able to open new banks with much less capital.
if you are asking who it is then the it's John Roberts but if you are asking what they are called spokeswoman or spokesman